He divided his kingdom into provinces and had a trusted governor for each one. He also, maintained a large standing army to protect his people.
A full definite reason that led to the decline of the Indus Valley Civilization is not known, as no reliable resource of that period is available right now. Every conclusion regarding the decline is based upon speculations of historians on what they believe. Through research it is clear that fall of the Harappan Civilization occurred between 1800 BC to 1700 BC(ish). It is highly believed that the Aryans were the next settlers. They were skilled fighters, so their attack might have led to the fall of Harappan Civilization. Even The human remains found during excavation of Indus valley point towards some violent because of their death
These are the formal ways...
1) Get 2/3rds majority vote in both houses of Congress to propose a Constitutional amendment and a 3/4ths vote of the State Legislature to ratify the amendment.
2) Call a Constitutional convention by 2/3rds of the state legislatures with a 3/4ths vote to ratify the amendment.
The group that was brought in were African slaves. Mostly from West Africa due to an easier commute.
Explanation:
I don't know about training. But General John J Pershing would become the lead General of the American Expeditionary Force in World War I. He was stationed at the border of Mexico (before the U.S. joined the war) to help dissolve issues with Poncho Villa. This experience would help when the United States would enter the war.
